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Inventory (Details) - CAD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Inventory [Abstract] |  |
Fuel | $ 213 | $ 180
Raw Materials | 241 | 216
Emission Credits | 20 | 22
Inventory, Net, Total | $ 474 | $ 418

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- Definition Carrying amount as of the balance sheet date of emission credits form the Acid Rain Program for sulphur dioxide emissions and the Regional Greenhouse Gas Initiative (RGGI) for carbon dioxide emissions. The emissions credits inventory balance represents the credits purchased to offset the other current liabilities and other long-term liabilities associated with these programs.. + References No definition available. + Details
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